1Samuel 2:18-20

18Samuel was ministering before the Lord, a boy wearing a linen ephod.
19His mother used to make for him a little robe and take it to him each year, when she went up with her husband to offer the yearly sacrifice.
20Then Eli would bless Elkanah and his wife, and say, May the Lord repay you with children by this woman for the gift that she made to the Lord; and then they would return to their home.